<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792018000100023</article-id>
<article-id pub-id-type="doi">10.28940/terra.v36i1.254</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Corrección de la clorosis férrica con quelato EDDHA en cultivos sembrados en suelo alcalino y calcáreo]]></article-title>
<article-title xml:lang="en"><![CDATA[Correction of iron chlorosis with chelate EDDHA in crops grown in alkaline and calcareous soil]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz Franco]]></surname>
<given-names><![CDATA[Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinosa Ramírez]]></surname>
<given-names><![CDATA[Martin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz Cháirez]]></surname>
<given-names><![CDATA[Flor Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,INIFAP Campo Experimental Río Bravo ]]></institution>
<addr-line><![CDATA[Río Bravo Tamaulipas]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2018</year>
</pub-date>
<volume>36</volume>
<numero>1</numero>
<fpage>23</fpage>
<lpage>30</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792018000100023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792018000100023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792018000100023&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La deficiencia de hierro (Fe) en los cultivos se manifiesta principalmente en regiones con suelos alcalinos y calcáreos. En el presente estudio se evaluó la efectividad del Fe3+ quelatado con EDDHA [ac. etilendiamino di-(o-hidroxifenilacetato)] y la aspersión foliar de FeSO4 solos y combinados, en los cultivos de sorgo, soya, okra y frijol. El EDDHA-Fe (Ultraferro®) se aplicó a dosis de 1% en la siembra sobre las semillas y para el FeSO4 se hicieron dos aplicaciones foliares al 1.5%. En los cuatro experimentos se determinó el índice de clorofila (SPAD) en tres fechas (15 y 28 de marzo, 6 de abril), y a los 48-50 días después de la siembra se cuantificó la biomasa foliar y radical. Entre los cultivos, las plantas de soya y okra manifestaron la mayor intensidad de clorosis férrica, la cual fue visible entre los tratamientos. En ambos cultivos los mayores valores SPAD y de biomasa foliar y radical se obtuvieron con la aplicación de EDDHA-Fe solo o combinado con FeSO4. En frijol y sorgo, la clorosis fue menos visible, para las plantas de frijol el mayor índice de clorofila se registró con EDDHA-Fe y FeSO4 en las dos últimas fechas de evaluación (28 de marzo y 6 de abril) y los tres tratamientos químicos superaron de forma similar al testigo, en la biomasa foliar y radical. Las plantas de sorgo registraron los mayores índices SPAD en la última fecha (6 de abril), mientras que no fueron significativas las diferencias en la biomasa foliar y radical. No se observó efecto aditivo en las variables con la combinación EDDHA-Fe y FeSO4. En general, los resultados indican que la aplicación de EDDHA-Fe solo o combinado con FeSO4 foliar en soya, okra y frijol, mostraron corrección de la clorosis férrica de manera efectiva.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Iron deficiency in crops occurs mainly in regions with alkaline and calcareous soils. In the present study the effectiveness of Fe3+ chelated EDDHA [ethylenediamine di-(o-hydroxyphenylacetic acid)] is assessed alone or combined with foliar spray of FeSO4, in crops of sorghum, soybean, okra and beans. EDDHA-Fe (Ultraferro®) was applied at a dose of 1% on the seed at sowing and FeSO4 was applied on foliage twice at 1.5%. In the four experiments, we determined the variables index of chlorophyll (SPAD) in three readings (March 15 and 28, April 6), and 47-50 days after sowing and leaf and root biomass. Between crops, soybeans and okra expressed greater intensity of chlorosis, which was visible among treatments. In both crops, higher SPAD and leaf and root biomass values were obtained with applications of EDDHA-Fe alone or combined with FeSO4. In okra, the SPAD index was higher with the combination EDDHA-Fe + FeSO4, although root and leaf biomass was greater with EDDHA-Fe alone or in combination with FeSO4. In beans and sorghum, chlorosis was less visible. For beans, the highest SPAD rate was recorded with EDDHA-Fe and/or FeSO4 in the two latest readings (March 28 and April 6) and in leaf and root biomass. Similarly, the three chemical treatments exceeded the control. However, in sorghum, the highest SPAD was recorded on the last reading (Apr-6), while there were no significant differences in leaf and root biomass. There were no observed additive effects on the variables with the combination EDDHA-Fe and FeSO4. In general, the results indicate that application of EDDHA-Fe alone or combined with foliar FeSO4 in soybean, okra and bean, effectively corrected chlorosis ferric.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[FeSO4]]></kwd>
<kwd lng="es"><![CDATA[deficiencia de hierro]]></kwd>
<kwd lng="es"><![CDATA[soya]]></kwd>
<kwd lng="es"><![CDATA[sorgo]]></kwd>
<kwd lng="es"><![CDATA[frijol]]></kwd>
<kwd lng="es"><![CDATA[okra]]></kwd>
<kwd lng="en"><![CDATA[FeSO4]]></kwd>
<kwd lng="en"><![CDATA[iron deficiency]]></kwd>
<kwd lng="en"><![CDATA[soybean]]></kwd>
<kwd lng="en"><![CDATA[sorghum]]></kwd>
<kwd lng="en"><![CDATA[beans]]></kwd>
<kwd lng="en"><![CDATA[okra]]></kwd>
</kwd-group>
</article-meta>
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